purple with rage
red with anger
green with envy
blue in the face
tickled pink
I’m feeling blue. (sad)
He’s green. (inexperience)
You’re yellow. (cowardly)
She’s pink. (left-leaning)
They’re red. (communist)
grey matter
green thumb
blue blood
red-handed
black-hearted
born to the purple
white bread
shrinking violet (more to do with the flower, but close enough?)
black mark
purple prose
yellow journalism
black comedy
white noise
black thoughts
grey area
white lie
white elephant
in the black
in the red
beyond the pale (totally different meaning of pale though)
___
thanks, haj, for some brainstorming